bloody poop from baby!!!!???

i just went in to the brooder were i keep my 3 day old broad breasted white chicks and i found 2 bloody poops. WHATS GOING ON ARE THEY GUNNA DIE OR IS THIS JUST A THING???? i allready lost one. im down to 5 i cant loose another can somebody please help me???
THANK YOU

thank you for awensering. yea there hatchery chicks. there on a medicated turkey /gamebird starter is that enough, i dont know if its just hot but he/she will just sit there and pant with its mouth open. i dont know if this is connected to cocci.

if not C. then it could be something genetic or picking by one at the vent of another. I'd separate out the panter and make sure it was drinking and eating (might have to use eyedropper - be very careful to just drip small amount over side of beak and see that it swallows).